Attachment for power-presses.



J. G. 6L H.l L. BENSTER.

ATTACHMENT FOR POWER PRESSES. APPLIoATIoI Hum Nov. 11, 1909.

980,047, Patented Dec..27, 1910.

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J. G. & H. L. BENSTBR.-

ATTACHMENT FOB BOWER PRESSES. APPLIOATION FILED Nov.11, 1909.

980,047. Patented Decgz?, 1910.

Ja giura-sum* s. F Il J. G. & H. L. BENSTER. ATTAOHMENT Pon PowBnPRBssBs.

APPLIOATION FILED NOV.11, 1909.

Patented Dec.27, 1910.

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L J Ww m fm ma Vio UNITED STATES PATENT OFFICE.

JOSHUA Gr. BENSTER ANI) HALSEY L. BENSTER, 0F IVIOLINE, ILLINOIS.

ATTACHMENT FOR POWER-PRESSES.

Specification of Letters Patent.

Patented Dec. 27, 1910.

To all whom it may concern:

Be it known that we, JOSHUA Gr. BENSTER and I-IALsnY L. BENs'rnR, both citizens of the United States, and residents of Moline, in the county of Rock Island and State of Illinois, have invented a new and Improved Attachment for Power-Presses, of which the `following is a full, clear, and exact description.

The invention relates to attachments for power presses, such as are used for punching structural steel I-beams, channel beams and like articles, and its object is to extend the range thereof and to permit straightening, bending, twisting or untwisting of a beam or a similar article, in a very simple economical and accurate manner.

For the purpose mentioned use is made of an anvil having reversely, inclined guideways and flanked by rollers for the beam or other article to rest on, a pair of wedges in the guideways, and a reciprocating head provided with a series of adjustable wedges operating in conjunction with the said rollers and the said anvil wedges, to straighten, bend, twist or untwist the beam or other article.

A practical embodiment of the invention is represented in the acompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of the attachment in position on the power press; Fig. 2 is a plan view of the same, the rain of the press being shown in section; Fig. 3 is a frontelevation of the same; Fig. 4 is a side elevation of the same; Fig. 5 is a sectional side elevation of the same on the line 5 5 of Fig. 2; Fig. 6 is a similar view of the same on the line 6-6 of Fig. 2; and Fig. 7 is a 'similar view of the same on the line 7-7 of Fig. 2.

On the lower end ofl the rain A is bolted or otherwise secured a head B, and on the bed C of the power press rests an anvil D, the said head B and the anvil D extending in the operating space of the power press, as

plainly indicated in Fig. 1.` In order to hold the anvil D against movement on the ybed C, the under side of the anvil D is provided with lugs D fitting into the waste hole C of the bed C (see Fig. 3), and the sides of the `anvil D are provided with bearings D2, of which the lowermost fit against the sides of the bed C to hold the same against sidewise movement.

In the bearings D2 are held vertically adjustable brackets E, in the upper ends of which are journaled rollers E for supporting the beam Gr or other article to be operated upon, as hereinafter more fully described. The brackets E are secured in place in the bearings D2 by set screws E after the brackets are adjusted to bring the rollers F into proper supporting position. The brackets E are made of sprinor steel, and are of suicient elasticity to yieldj under the pressure of the ram A but not under the weight of the beam Gr alone. By this arrangement the lower edge of the beam G is supported clear of the wedges I-I, I-I, while the ram A is in its upper position.

On the upper face of the anvil D are formed transversely-extending, reversely inclined guideways D2, in which are slidingly mounted anvil wed es H, above which are arranged head Weges I extending transversely and mounted to slide in transverse, horizontal guideways B formed on the under side of the head B.V The rear ends of the head wedges I are provided with upwardly-extending pins I passinoP into elongated slots J formed in a lever .I fulcrumed at J2 in a bracket B2 projecting from the rear of the head B. One end of the lever J terminates in a handle J 3 under the control of the operator, to impart a swinging motion to the lever J with a view to shift the head wedges I in their guideways B but in opposite directions one relatively to the other, the head wedges I beinfr so arranged that the planes of their incIined or oblique undei' surfaces intersect at the center line of attachment (see Fig. 4).

On the under side of the head B at the middle thereof is formed a transversely-extending, inclined guideway B3, in which slides a wedge K, the under surface of which is horizontal, but the wedge is raised or lowered on sliding the same transversely in its guideway B2. For this purpose the forward end of the wedge K is provided with a pin K projecting into an elongated slot L formed in a lever L fulcrumed at L2 on a bracket B* at one side of the head B. The lever L terminates in a handle L3 adapted to be taken hold of by the operator, for

being.

shifting the wedge K transversely in its guideway B3, as hereinafter more fully explained.

The operation is as follows: IVhen it is desired to twist or untwist a beam Gr, then use is made of the wedges H and I, while the wedge K is moved forwardly to its full extent to become inoperative for the time The beam G to be operated on is placed on the rollers F (see Figs. 8, 5 and 6), and the wedges H, H so inserted that their upper surfaces are reversely inclined are shifted in a transverse direction until their upper surfaces engage the lower edges 'of the ends of the beam, as will be readily understood by comparison of Figs. I5 and 6. The power press is now set in motion so that the ram A descends and with it the head B,

'whereby the wedges I engage the upper edges of the ends of the beam G to twist the beam. It is understood that during the reciprocation of the ram A the operator gradually moves the lever J to shift the head wedges I, I simultaneously to gradually lower the same and thus gradually twist the beam to the desired extent, the amount of the twist being determined by straight edges held at various points on the beam by the operator. In a like manner, the operator may proceed to take a twist out of a twisted beam by reversing the operation. l/Vhen it is desired to bend a beam, then the wedges I are moved in inoperative position, while the wedges H are reversed from end to end', so that their upper surfaces extend in a horizontal plane, as indicated in Figs. 4f and 7, with the beam G resting on the rollers F and the wedges H. The power press is now actuated so that the ram A is reciprocated and thereby moves the under surface of the wedge K into engagement with the top of the beam Gr, thus bending the beam in a downward direction for straightening or bending purposes, as the case may be. During the reciprocating movements of the ram A, the operator manipulates the lever L so as to gradually move the wedge K transversely in a rearward direction, thus lowering the wedge and consequently bending the beam G to the desired extent.

It will be seen that the head B and the anvil D with the parts mounted thereon can be readily placed in position on the power press and used to extend the range of the power punch for straightening, bending, twisting or untwisting purposes, as above explained.

Having thus described our invention, we claim as new and desire to secure by Letters Patent:

l. A device of the class described, comprising an anvil having reversely inclined guideways, anvil wedges slidingly engaging the said guideways and having their upper faces horizontally disposed and adapted to be inclined, vertically adjustable rollers on the sides of the anvil for the beam to rest thereon, a reciprocating head above the said anvil, and a wedge held adjustably on the said head intermediate the said anvil wedges, and operating in conj unction with the said rollers and anvil wedges to straighten or bend a beam or like article.

2. An attachment for power presses, comprising an anvil for removable attachment to the bed of the press, the said anvil having reversely inclined guideways, and wedges slidingly engaging the said anvil guideways, vertically adjustable rollers' mounted on the sides of the anvil, a head for attachment to the reciprocating ram of the press and provided at its bottom near the sides with horizontal guideways and at the middle with an inclined guideway, head wedges slidingly engaging the said head guideways, and manually-controlled means for moving the said head wedges in their guideways.

3. An attachment for power presses, comprising an anvil for removable attachment to the head of the bed of the press, the said anvil having inclined transversely-extending parallel guideways at the top and bearings at the sides, anvil wedges slidingly engaging the said guideways and adapted to be reversed therein, brackets held vertically adjustable in the said bearings, rollers j ournaled in the said brackets, a head for attachment to the ram of the power press and provided at its bottom with horizontal guideways directly opposite the said anvil guideways, and head wedges slidingly engaging the said head guideways.

4. An attachment for presses, comprising an anvil for removable attachment to the bed of the press, the said anvil having inclined -transversely-extending parallel guideways at the top and bearings at the sides, anvil wedges slidingly engaging the said guideways and adapted to be reversed therein, brackets held vertically adjustable in the said bearings, rollers journaled in the said brackets, a head for attachment to the ram of the power press and provided at its bottom with horizontal guideways directly opposite the said anvil guideways, head wedges slidingly engaging the said head guideways, and manually-controlled means for shifting the said head guideways simultaneously in opposite'directions.

5. An attachment for power presses, com. prising an anvil for removable attachment to the bed of the press, the said anvil having inclined transversely-extending parallel guideways at the top and bearings. at the sides, anvil wedges slidingly engaging the said guideways and adapted to be reversed therein, brackets held vertically adjustable in the said bearings, rollers j ournaled in the said brackets, a head for attachment to the ram of the power press and provided at the middle with an inclined transversely-extending guideway, a head Wedge slidngly engaging the said head guideway, and manually-controlled means connected With the said head Wedge to adjust the same transversely in its guideway.

In testimony whereof We have signed our names to this specification in the presence of two subscubing wltnesses.

JOSHUA G. BENSTER. HALSEY L. BENSTER.

Witnesses:

FRED. W. ADELMAN, GEO. W. Woon. 

